In our daily life, various air-conditioning equipment, range hoods, etc. will produce a large amount of exhaust gas and smoke, and for such gases, high-rise buildings are generally equipped with fire-fighting and smoke-exhausting systems, then, on these exhaust systems, What role does the fire damper frame and smoke venting valve play?
Most of the high-rise buildings and other modern buildings are equipped with ventilation, air conditioning and smoke control systems. In the event of a fire, the pipes in these systems will become the passage for flames and smoke. In order to prevent the fire from spreading through the air duct, the requirements for the setting of the fire damper frame and the exhaust valve are clearly specified in the Code for Fire Protection of Building Design GBJ16-87 and the Code for Fire Protection of High-rise Civil Building Design GB50045-95.
The fire damper frame is used in the air supply and return air lines of the ventilation and air conditioning system. It is normally open. When the fire occurs, the gas temperature in the pipeline reaches 70 °C, it will close itself, and it can meet the fire resistance stability and fire resistance within a certain period of time. Integrity requirements, from the smoke and fire resistance. The exhaust valve is used on the exhaust system pipe or the suction port of the exhaust fan, and is normally closed. When a fire occurs, the valve is manually or automatically opened by a fire alarm signal, and the smoke is smoked according to the system function. When the gas temperature reaches 280 °C, it will automatically close, and it can meet the requirements of fire resistance stability and fire integrity in a certain period of time.